Portal 2 Expands with "Perpetual Testing Initiative" in May

Valve will release the next add-on for Portal 2 on May 8, the company announced today. The "Perpetual Testing Initiative," coming to Mac and PC next month, lets Portal 2 players make their own test chambers with the aid of an in-game editor.

The "Perpetual Testing Initiative" lets us create, share, and play Portal 2 levels with a simplified puzzle maker, Valve says, one that allows the "creation of mind-bending puzzles without ever leaving the game."

Players can publish maps to the Steam Workshop, where others can browse, vote on and play Portal 2 user generated content. Valve adds that "selected puzzles will automatically be downloaded and installed inside Portal 2."

The debut trailer for Portal 2's "Perpetual Testing Initiative" will air on GT.TV tonight, then on GameTrailers.com.